Rotating cutter.



No. 690,323. Patented D60. 3|, |90I. 0.-. SGHAERER.

ROTATING GUTTER.

(Application mea June u, 1900.

(lo Model.)

. m f. v Ank IVYENTOR ATTORNEYS UNITED STATES PATENT OFFICE.

OTTO SOHAERER, OF ZURICH, SWITZERLAND.

ROTATINGI4 CUTTER.

SPECIFICATION forming part of Letters Patent No. 690,323, dated December 31, 1901.

application flied zum@ 5,1900.

To @ZZ whom it n'tcty concern/.-

Be it known that I, OTTO SCHAERER, acitizen of the Republic of Switzerland, and a resident of Griingasse 6, Zurich, Switzerland, have invented certain new and useful Improvements in Rotating Cutters, of which the following is a full, clear, and exactspeciiication.

This invention consists in means whereby the cutter' may be thrown out of gear.

In the accompanying drawings, Figure lis a side view of the machine, partly in section. Fig. 2 is an end view, and Fig.V 3 a cross-sectional view, of the machine. Fig. 4 is a longitudinal section of the cylinder and adjacent parts. Fig. 5 is a plan view of a detail. Fig. 5 is a diagram illustrating the working of the invention. Fig. 7 is a view of a detail.

Referring to Fig. l, the head-stock ct is supported on a bed wbetweenthe tailpiece-spin- (lle s and the main carriage. A cylinder b is supported in the head-stock ce, and in the cylinder h a hollow cylinder c is placed eccentric thereto. This latter cylinder is to hold the work-piece. A gear d is Xed on the cylinder b, which engages a pinion p, driven from a gear e,- carried by a sleeve g, supported on a pin e', said sleeve being osciilated by an arm f, a slot in which receives a pin connected with the tailst-ock spindle, so that the rotation of the tail-stock spindle will oscillate this slotted arm f and through the gearing described impart a rotary oscillatingmovement to the cylinder b. The eccentrically-arranged cylinder c has on its rear enda ratchet-wheel h, with which engages a pawl i, pivoted to the gear d. A spring-pressed detent k, carried by a bracket 7c', adjustably held by a setscrew k2 to an arc-shaped part u of the frame, engages the ratchet-wheel h to prevent backward movement thereof. A sleeve Z is fastened to the cylinder h, and it has inclined slots m m', adapted to be engaged by apin n, supported on the head-stock. Vhen this pin engages one of the inclined slots, the rotary movement of the cylinderb will cause the pin and slot to produce a longitudinal movement of the cylinder.

The ungearing of the cutter is effected in the following manner: The tail-stock spindle Serial No. 19,099. (No model.)

through the described connections produces a continuous oscillatory motion of the cylinder b. This causes the tool-holding cylinder to have a swinging movement as a whole about the center of rotation of the carryingcylinder b. In Fig. 6 the course of movement of this cylinder c is represented by 1 2.

During the rotation of the cylinder b the cylinder c is moved by means of the pawl i, Fig. 2. As soon as this movement has been eected in one direction the cylinder b swings back in the opposite direction; but in this movement the pawl 7c engages the ratchet vwheel h and holds the same against rotation, so that a relative displacement takes place between the hollow cylinder c and the carryingy cylinder b. If the cutter is to be ungeared at the surface only, it is necessary to place the screw n up high and to fasten the sleeve Z onto the fore part of the cylinder b. In this manner the sleeve serves to confine the spindle while in motion.

l. In combination, ahead-stock,a carryingcylinder revolving' therein, ,a cylinder eccentricaliy arranged within the carrying-cylinder, said eccentric cylinder being arranged to support the cutter, means for giving the car rying-cylinder an oscillatory motion, means whereby the two cylinders are connected and the eccentric cylinder partakes of the motion of the carrying-cylinder and means whereby the eccentric cylinder willl be held against movement on the return movement of the carryin g-cylind er whereby the cu tter is given an interrupted,intermittent eccentric oscillatory movement.

2. In combination, the head-stock, acylinder, means for oscillating the cylinder there in, a sleeve adjustably attached tothe cylinder and having inclined grooves, a pin on the 

